CD74HC40103EE4

Counter Dividers Overview

The CD74HC40103EE4 is an 8-bit synchronous down counter manufactured using high-speed silicon gate technology. It operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -55°C to 125°C. The device features active-low control inputs for enabling/disabling the clock, clearing the counter to its maximum count (255), and presetting data either synchronously or asynchronously. It includes a single output that goes low when the internal count reaches zero.

Counter Dividers Feature Summary

• Supports both synchronous and asynchronous preset operations via dedicated control inputs.
• Capable of cascading in either synchronous or ripple modes using terminal count outputs.
• Features balanced propagation delay and transition times with significant power reduction compared to LSTTL logic ICs.

Counter Dividers Applications

• Synchronous digital counting sequences
• Asynchronous data loading applications
• Cascaded multi-stage binary counters

Counter Dividers Procurement Notes

Verify the specific package type and lead finish against the datasheet before procurement. Confirm RoHS compliance status and ensure the ordering suffix matches the required manufacturing specifications. Check current production status as part numbers may be subject to change or discontinuation without notice.

Counter Dividers Selection Notes

Select this component for designs requiring an 8-bit synchronous down counter with flexible preset capabilities. Ensure the system voltage falls within the 2V to 6V range for HC types. Consider the wide temperature range if operating in extreme environments. Verify input compatibility and load requirements against the fanout specifications provided in the datasheet.

Counter Dividers Part Context

This device belongs to the Texas Instruments 74HC series of high-speed CMOS logic devices. It is functionally equivalent to the CD54HC40103 but utilizes commercial-grade packaging. The EE4 suffix indicates a specific PDIP-16 package variant compliant with environmental standards. It serves as a core building block for complex digital timing and sequencing circuits.

Counter Dividers Replacement Considerations

CD74HC40103E

Counter Dividers FAQ

How does the counter handle data preset?

Data can be loaded into the counter either synchronously on the next positive clock transition or asynchronously regardless of the clock state, depending on the configuration of the PE and PL inputs.

What happens when the count reaches zero?

When the internal count reaches zero, the TC (Terminal Count) output goes low if the TE input is low. If all control inputs except TE are high at zero count, the counter jumps to the maximum count of 255.